import java.util.List;

/**
 * A book is a file and has a title, short description, one or several authors and a isbn number.
 * 
 * @author Xi Luo
 * 
 */
public class Book extends File {

   private String shortDescription;

   /**
    * 
    * @param title title of the book
    * @param isbn isbn number of the book
    * @param authorString author email string of the book
    * @param shortDescription short description of the book
    */
   public Book(String title, String isbn, String authorString, String shortDescription) {
      this.title = title;
      this.isbn = isbn;
      this.authorString = authorString;
      this.shortDescription = shortDescription;
   }

   public String getShortDescription() {
      return shortDescription;
   }

   public void setShortDescription(String shortDescription) {
      this.shortDescription = shortDescription;
   }

}
